(19)
(11) EP 2 116 694 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
31.05.2017 Bulletin 2017/22

(43) Date of publication A2:
11.11.2009 Bulletin 2009/46

(21) Application number: 09158404.5

(22) Date of filing: 21.04.2009
(51) International Patent Classification (IPC): 
F01D 11/00(2006.01)
 F02B 39/00(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

(30) Priority: 05.05.2008 US 115245

(71) Applicant: Honeywell International Inc.
Morris Plains, NJ 07950 (US)

(72) Inventors:
  • Arnold, Philippe
    France, 88270, Hennacourt (FR)
  • Petitjean, Dominique
    France, 88120, Julienrupt (FR)
  • Ruquart, Anthony
    Morristown, NJ 07962-2245 (US)
  • Dupont, Guillaume
    Morristown, NJ 07962-2245 (FR)
  • Jeckel, Denis
    Thaon les Vosges (FR)

(74) Representative: Houghton, Mark Phillip et al
Patent Outsourcing Limited 1 King Street
Bakewell, Derbyshire DE45 1DZ
Bakewell, Derbyshire DE45 1DZ (GB)

   


(54) Turbocharger with variable nozzle having vane sealing surfaces


(57) A variable nozzle for a turbocharger includes a plurality of vanes (58) rotatably mounted on a nozzle ring (40) and disposed in a nozzle flow path defined between the nozzle ring and an opposite nozzle wall. Either or both of the faces of the nozzle ring and nozzle wall include(s) at least one step (46a,46b) that defines sealing surfaces positioned to be substantially abutted by airfoil surfaces of the vanes in the closed position of the vanes and to be spaced from the airfoil surfaces in positions other than the closed position. This substantial abutment between the airfoil (58) surfaces and the sealing surfaces (46) serves to substantially prevent exhaust gas from leaking past the ends of the airfoil portions. At the same time, clearances between the nozzle ring face and the end faces of the airfoil portions can be sufficiently large to prevent binding of the vanes under all operating conditions.







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Search report